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File: SOC-penguins_breeding-pairs_graph_620.png

Line graph of Adelie and Gentoo penguin populations over time.

Image caption

Populations of Adélie Penguins (bright blue line) have crashed as sea ice in their habitat disappears. Population of the warm-adapted Gentoo penguin (dark blue line) are climbing. NOAA Climate.gov graph, adapted from Figure SB6.2 in State of the Climate in 2015.